eight



2 SheetsfSheet l.

(No Model.)

(No Model.) 2 Sheets-Sheet 2. W. S. EIGHT. BRICK 0R TILE MACHINE.

No. 504,781. Patented Sept. 12, 1893.

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e w m UNITED STATES PATENT OEEIOE.

wILLIAM s. IIIeIIT, OE BUOYRUS, OHIO, AssIeNOE To 'r1-IE EEEY-SIIEOKLER COMPANY, OE SAME PLAGE.

BRiGK OR TILE MACHINE.

SPECIFICATION forming part of Letters Patent No. 50 4,781, dated September 12, 1893.

Application filed April 1, 1893. Serial No. 468,707. (No model.)

To all whom it may concern.-

Be it known that I, WILLIAM S. HIGIIT, a citizen of the United States, residing at Bucyrus, in the county of Crawford and State of Ohio, have invented certain new and useful Improvements in Brick or Tile Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the saine, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

Figure l, is a perspective view of a brick machine embodying my invention. Fig. 2, is an enlarged sectional view of the Outer ends of the concentric screw shafts, the iianged bushinginterposed between the two, the bushing or bearing for the outer shaft, the cap plate, and the screws for holding the shafts centrally. Fig. 3, is a sectional view of the bushing with its vertically disposed flange for preventing the material working its Way between the concentric shafts. Fig. 4, is a sectional view of the bushing or bearing showing its annular groove for the reception of Babbitt-metal or other packing. Fig. 5, is a face view of the box in which the shafts are mounted. Fig. 6, is a face view of the cap plate. Fig. 7, is a sectional view of the same.

My invention relates to that class of brick or tile making machines which rst grind or pulverize the clay, then force it through a die by means of revolving beaters or screws and, as the clay emerges from the outlet of the machine or die, deliver it upon a table where it is cut into sections or blocks of the shape and approximate size of a brick or tile.

In carrying out my invention I prefer to use the form of machine shown in Fig. l, although it is perfectly evident that my improvements may be applied to other well known forms of machines of the class before mentioned.

In machines of this character serious trouble has been Often occasioned by the clay being forced or working its way between the concentric screw shafts or between the bushings usually placed between the adjoining faces of said shafts and becoming hard and dry, not

only greatly retarding the free working of the machine, but also finally wearing away the shafts or bushings to such an extent that their removal became a necessity and new ones were often required. This greatly increased the running cost of said machines and required frequent stoppages for adjustment and repairs.

The essential object of my invention is to overcome these defects, and to provide a simple and comparatively inexpensive means for preventing the clay nding its way between the shafts or between the bushings therein.

Referring now to the accompanying drawings for a more complete explanation of my invention, A represents a cylinder or casing supported upon a suitable bed or frame in which the power shaft Bis mounted and provided with a pulley C to which power may be applied in any well known manner, the said pulley having a frictional or other brake D of any well known form and construction, and said shaft having mounted upon it a pinion E and gear wheel F as shown in Fig. l; said pinion meshing with a gear b on a countershaft H which also carries a pinion I which meshes with and drives alarge gear .I on the hollow screw shaft K, and said gear F meshing with and driving a gear L on a shaft IWI placed within the hollow shaft.

The cylinder or casing of the machine has at its outer or discharge end a flange a to which a similar flan ge b on the die A is bolted as shown. Upon the hollow shaft a propeller c with blades or wings is placed and adapted to disintegrate the material and feed it toward the outlet or die, and upon the inner shaft M, is a propeller c operating with the propeller of the hollow shaft but in an opposite direction and geared so as to run at a higher speed than the rst named gear.

The machine is also provided with a feed hopper N and as far as described represents a form of brick or tile machine now extensively in use. It is to this preferred form of machine that I apply my present improvements, and to make these more manifest I will now refer to the detailed figures of the drawings.

In Fig. 2, a solid box or head 10 is adapted to be fitted within the cylinder or casing just back of the flanges a. and b, and it is suspended in place by screws 11 preferably three in number placed equidistant around it, with their shanks extending through the inner chamber of the casing or cylinder to the outside thereof whereby they may be adjusted without any derangement of the machine. The purpose of these screws and the head 10, is to always maintain the operating propeller shafts in the central plane of the casing, and to facilitate this result the inner threaded ends of the screws pass into threaded openings in the head or box 10 as shown. The center of the box or head 10 is adapted to receive the outer end of the hollow propeller shaft, said shaft being internally bored to receive a cast iron or other bushing 12 which fits it snugly Vand has itself a long internal groove 13 adapted to receive Babbitt metal or any other suitable packing for theV purpose of making a close bearing with the other propeller shaft or a bushing thereon.

Through the hollow shaft K passes the shaft M which projects beyond the end of the iirst named shaft and has the propeller fitted to it. This internal shaft is concentric with the hollow shaft and is provided with a bushing 14 of malleable iron or other appropriate materia-l, and is tted snugly to the shaft and revolves therewith with its inner end abutting against the end wall of the bore formed in the interior of the hollow shaft. This bushing 14 is formed or provided with a deep annular liange 15 vertically disposed when the parts are inV position, and has one of its side faces adapted to be closely fitted against the outer ends of the hollow shaft and its bushing to form a close joint at this point, and having its opposite side face adapted to tit within an annular recess formed in the inner face of a cap plate 16 shown in Figs. 2,

Vand 7, adapted to be securely held in place by means of bolts or screws 17 passing through it and into the box or head 10 as shown in Fig. 2. By this Vforming theange 15 upon the bushing Vcarried by the inner screw shaft, the outer ends of the bushing 12 and hollow shaft are securely closed against the admission of clay between these partsthereby overcoming the difficulties incident to the clay being forced back by the resistance of the propellers and finding its way into the crevices between the bearing surfaces, as before pointed out.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In brick and tile machines having a chamber or cylinder in which the clay iS mixed, a hollow shaft carrying a propeller, a shaft within the hollow shaft, and a vertically disposed fiange carried by the inner shaft and adapted to rest against the end of the hollow shaft to prevent the admission of clay between the shafts.

2. In brick and tile machines having a chamber or cylinder, in which the clay is mixed, a hollow propeller shaft having an inner bore at its outer end, a shaft within the hollow shaft having a bushing provided with a vertical flange adapted to bear against the end of the hollow shaft and its bushing to close the joint and prevent the admission of clay between said shafts.

In testimony whereof I affix my signaturein presence of two witnesses. Y

W'ILLIAM S. HIGHT. Witnesses:

R. G. HUNT, EDWARD VOLLRATH. 

